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MACHINE FOR CUTTING STONE.

PatentedApr. 26,1898.

ohms Varens ce Hummm UNITED STATES PATENT unich.

MACHINE FOR CUTTING STONE.

SPECIFICATION forming part of Letters Patent No. 602,890, dated April 26, 1898.

Application led January 27, 1,897. Serial No. 620,957. (No model.) Patented in Belgium June 9, 1896,1lo. 121,841, and in France October 17, 1896,110. 248,008.

To @ZZ whom, it may concern:

Be it known that we, Gnnoomn Wincoz, a subject of the King of Belgium, and HUBERT MAOHEPY, a citizen of the French Republic, residing at Soignies, Belgium, have invented certain new and useful Improvements in Machines for Cutting Stone, of which the following is a specification.

The invention has been patented in Belgium June 9, 1896, No. 121,841, with patents of addition July 27, 1896, No. 122,715, August 19, 1896, No. 123,079, and August 19, 1896, No. 123,080, and in France October 17, 1896, No.

Our invention relates to improvements in machines for cuttingstone by means of a Wire. It consists in a regulation of the Work of the -Wire in such a way that a maximum of Work is obtained.

The improvements apply to machines in which a helicoidal wire is moved by means of a pulley syst-em; and the object is not only to simplify both the construction and the handling of the machine, but also to give to the Wire a constant and proper tension necessary to produce perfect Work. The effect of this regulated tension is that the wire descends solely by gravity, and consequently exactly corresponds to the progress of the cut. This gives the greatest amount of work which can possibly be obtained.

Figure 1 is a side vieW of our invention With the Water-tanks in section. Fig. 2 is a similar view of another lform of our invention.

Instead of effecting the descent of the Wire in a mechanical Way We produce it by a Water charge added to the weight of the movable guides of the cutting-Wire. This is done by having basins restin any suitable manner upon the sockets in which turn the shafts of the pulleys, which descend with the Wire used to cut the stone. By filling the said basins with more or less Water any desirable charge may be obtained. When the guide-pulleys are to be raised again, this is done by any suitable or ordinary winch; but it may also be done automatically by giving to the basins a charge superior to that Which is necessary and to balance this charge partially by counterweights suspended on ropes or chains which are fastened to the said basins and run over two pulleys. In this way, which is illustrated in Fig. 2 of vthe accompanying drawings, We obtain the automatic lifting of the Wire. Some Water is allowed to escape from the basins, Where-upon the counterweights rapidly lift the Wire.

As shown in Fig. 2, the boxes containing the sockets C C', which bear the shafts of the guide-pulleys PP of the Wire F, are fastened to the basins B B. The latter are connected by means of ropes or chains E E with the counterweights l) D. The basins B B are filled with so much Water that a surplus of Weight sufficient to effect the descent of the wire is produced. When the pulleys P P are to be lifted, the cocks G G of the basins are opened, and the Water flowing out of the latter permits the counterbalance to elevate the pulleys.

It is plain that the arrangement of parts may be varied. Flexible pipes, for instance, may be attached to the basins B B', and the pipes may be provided with cocks in order to fill and empty the basins in an easy Way.

XVe shall not attempt to describe all the possibilities for varying the construction of the device, but We think it Well to describe and illustrate one permitting the same movements as heretofore. This development is illustrated in Fig. 1. From this ligure it will be seen that the charge exercised on the pulley P (and with the pulley P it is the same) is equal to the Weight of the carrying-sockets, augmented by the Weight of the charge B, placed on the said sockets bearing the shaft of this pulley, minus the Weight of the counterweight, which is diminished itself by the Weight of the volume of Water displaced in the basin M.' This development is very easy to handle and offers the further advantage that should the Wire become broken the pulleys P P do not fall to the floor, but descend only to the extent permitted by the descending counterweights. It is plain that with this development no flexible pipe is needed. The most complete development may, however, be obtained by combining the two just described, as shown in Fig. 2-that is to say, by maintaining the basins B B of the development first described and using also the basins M M. With this arrangement itis pos- IOO sible to regulate at Will and very exactly the necessary charge for the descent of the Wire during the Work.

We claim- 1. In combination with a cutting-Wire, basins containing liquid for causing the descent of the Wire by gravity,a counterbalance for each basin and means for lessening the Weight in the basins to elevate the Wire, the said basins acting to depress the Wire-supports While the counterweights tend to lift the same When the Weight .of the basins is lessened, substantially as described.

2. In combination with a cutting-Wire, basins containing liquid for causing the descent of the Wire by gravity, means for lessening the Weight in said basins to elevate the Wire, a counterbalance-Weight for each basin and the tanks in Which the same are immersed, said tanks acting to diminish the Weight of the counterbalance-Weight during the time the basins act for depressing the Wire-supports, and permitting the use of suflicient counterweight to prevent the wire-supports from falling to the floor, in case the Wire becomes broken at Which time the counter- Weight rises out of the tank.

3. In combination with the cutting-Wire, depressing-Weights for causing the descent of the Wire by gravity, a counterbalance-Weight for each depressing-Weight and tanks in which the counterweights are immersed, said tanks acting to diminish the Weight of the counter- Weights when the depressing-Weights act to depress` the Wire-supports and permitting the use of suficient counterweight to prevent the Wire-supports from falling to the floor should the Wire break at Which time the counter- Weight Would rise out of the tank.

In testimony whereof We have signed this specication in the presence of two subscribing Witnesses.

GREGOIRE WINCQZ. HUBERT MACHEPY.

Witnesses:

GEORGE BEDE, GREGORY PHELAN. 

